diff --git a/src/gpu/GridGenerator/io/SimulationFileWriter/SimulationFileWriter.cpp b/src/gpu/GridGenerator/io/SimulationFileWriter/SimulationFileWriter.cpp
index f3a66f69a06463ad528d6c00a7a36f5a234db19c..2dd0d61cca4873008d5faad9613342bc4ad5316b 100644
--- a/src/gpu/GridGenerator/io/SimulationFileWriter/SimulationFileWriter.cpp
+++ b/src/gpu/GridGenerator/io/SimulationFileWriter/SimulationFileWriter.cpp
@@ -19,6 +19,8 @@
 
 #include "utilities/communication.h"
 
+using namespace VF::GPU;
+
 /*#################################################################################*/
 /*---------------------------------public methods----------------------------------*/
 /*---------------------------------------------------------------------------------*/